Wiring inverter into 4 x 6v bank (balanced)

RoyB wrote:
This was my planning for installing a 1500WATT PSW INVERTER in my OFF-ROAD TRAILER setup. You will not not need to get inside the balanced wiring of your batteries. I like using the heavy duty four position battery switch made by BLUE SEA and use one of it ring terminal connections points to feed the INVERTER. You should also have an BLUE SEA FUSE ASSY in this line as well... My values were picked for my install - your instruction manual should state what size fuse you will need for your. The high wattage INVERTER MUST BE as close to the battery bank as possible with short cables. Your 2000WATT INVERTER can draw in excess of 162AMPS DC CURRENT. That will make your battery cable twitch when engaged.


Your bigger problem is going to be separating your 120VAC wiring from the 120VAC Power Distribution panel to install a 6PDT rotary switch arrangement for those 120VAC circuit you want to run off of shore power or your 2000WATT Inverter circuit.

This is a typical drawing on one way to accomplish this from GOOGLE SEARCH...


This rotary switch can be installed next to the Power Distribution Panel like shown here for a couple of GOOGLE SEARCH installs....








This could get very involved...

I ended up going the easy route of just running a multi-tap extension cord coming from the INVERTER with one going to the Home Entertainment area and the other one going back to the bedroom side table location. The two multi-tap 120VAC heads would always be hot when the INVERTER was on. The two extension cords were out of sight along the wall and behind things to get from point A to point B.

I also get alot of RFI NOISE being generator by the high wattage INVERTER. Makes for bad Ham Radio operations in my case.

Just some of my thoughts for your install...
Roy Ken

DC high current return path for your inverter is through the rv frame?

Connect to the same battery posts that are now the main posts for charging and house loads

For best results the inverter should be connected same as the main feed to the RV.

Inverter in with the batteries will also depend on general space, volume and ventilation. Distance of 6' is getting long for 2000 watts. How about a picture of the battery set up vs the close compartment?

The remote turning the inverter off will cut the idle draw from about 2 amps to a few milliamps.

This was my planning for installing a 1500WATT PSW INVERTER in my OFF-ROAD TRAILER setup. You will not not need to get inside the balanced wiring of your batteries. I like using the heavy duty four position battery switch made by BLUE SEA and use one of it ring terminal connections points to feed the INVERTER. You should also have an BLUE SEA FUSE ASSY in this line as well... My values were picked for my install - your instruction manual should state what size fuse you will need for your. The high wattage INVERTER MUST BE as close to the battery bank as possible with short cables. Your 2000WATT INVERTER can draw in excess of 162AMPS DC CURRENT. That will make your battery cable twitch when engaged.


Your bigger problem is going to be separating your 120VAC wiring from the 120VAC Power Distribution panel to install a 6PDT rotary switch arrangement for those 120VAC circuit you want to run off of shore power or your 2000WATT Inverter circuit.

This is a typical drawing on one way to accomplish this from GOOGLE SEARCH...


This rotary switch can be installed next to the Power Distribution Panel like shown here for a couple of GOOGLE SEARCH installs....








This could get very involved...

I ended up going the easy route of just running a multi-tap extension cord coming from the INVERTER with one going to the Home Entertainment area and the other one going back to the bedroom side table location. The two multi-tap 120VAC heads would always be hot when the INVERTER was on. The two extension cords were out of sight along the wall and behind things to get from point A to point B.

I also get alot of RFI NOISE being generator by the high wattage INVERTER. Makes for bad Ham Radio operations in my case.

Just some of my thoughts for your install...
Roy Ken

Have the inverter as close to the batteries as possible, but preferrably not IN with the batteries.

Use the thickest wires possible and fuse them (pos line(s)) close to the batteries.

I use two 1/0 wires per poles.

I used the POS pole of one battery group and the neg pole of the other.

I measured out the 4 wires to be equal length. (some say all four being equal is not as important) the multiple wires per pole MUST be equal length.

Keep the length as short as possible. 6' each pole will have a fair bit of voltage loss at higher amps. Use a voltage drop calculator and see if your happy with the results. **read the fine print on the calculator. The one i particularly like using does NOT want you to double the length of the wire runs. It takes that into account.**

It is perfectly safe to double up on wires per pole if you fuse them approprately. ie. If you are going to have 300a max to the inverter, and you are using 2 wires per pole, each should be fused no more than 150a or wire rating, whichever is LESS.

A fuse that has a higher rating than the wire, turns the wire into the fuse.